Convert the else block here into an elseif: https://github.com/alleyinteractive/apple-news/blob/master/includes/apple-exporter/components/class-embed-web-video.php#L90-L91

Add an else that bails out instead of registering the content, as we do not want to fall back to Vimeo on all iframe embeds, since not all iframe embeds are Vimeo embeds.